An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.

Summary List Popular Mods  (0 - 30 of 38)
Lambda Wars
Alien Swarm

1. Lambda Wars

3 months ago Released Sep 25, 2012 Single & Multiplayer Real Time Strategy

Lambda Wars (formerly Half-Life 2: Wars) brings the struggle between the human resistance and their Combine overlords to a multiplayer real-time strategy...

Swarm Director 2
Alien Swarm

2. Swarm Director 2

4 days ago Released Jul 4, 2014 Single & Co-op Third Person Shooter

Alien Swarm with a twist. Better AI, new mutations, new mapper tools.

Space Swarm Marines
Alien Swarm

3. Space Swarm Marines

5 days ago Released May 5, 2015 Single, Multiplayer & Co-Op Third Person Shooter

New mod Space Marines for Alien Swarm. :)

ALIEN SWARM FP
Alien Swarm

4. ALIEN SWARM FP

1 year ago TBD Co-op First Person Shooter

This is a first person view modification of "Alien Swarm"

Occult Scrim
Alien Swarm

5. Occult Scrim

2 weeks ago Released May 15, 2012 Single & Multiplayer Third Person Shooter

Occult Scrim is real time tactical shooter with chess like awareness and high skill ceiling. The game focuses on intricate game design while offering...

Black Mesa Swarm
Alien Swarm

6. Black Mesa Swarm

1 month ago Released Dec 20, 2013 Single & Multiplayer First Person Shooter

Black Mesa Swarm is an Alien Swarm total conversion remaking Valve Software's award-winning PC game, Half-Life.

Alien Swarm: Reactive Drop
Alien Swarm

7. Alien Swarm: Reactive Drop

1 month ago Released Apr 9, 2014 Single, Multiplayer & Co-Op Arcade

Adds new PvP game modes, co-op features and singleplayer support into Alien Swarm without changing its concept.

Alien Swarm:SP
Alien Swarm

8. Alien Swarm:SP

1 year ago Released Feb 26, 2011 Single Player Third Person Shooter

Play the official Alien Swarm maps and any addons through the Offline Practice mode. Alien Swarm:SP also supports a large amount of configurable changes...

Tron Swarm
Alien Swarm

9. Tron Swarm

3 weeks ago Released Apr 30, 2015 Single, Multiplayer & Co-Op Third Person Shooter

New custom models from Tron Revolution for Alien Swarm.

Vectronic
Alien Swarm

10. Vectronic

5 months ago TBD Single Player Puzzle Compilation

Vectronic is a first-person environmental puzzle mod using Valve's Source Engine. Players must solve puzzles using special power balls that effect boxes...

Modular Combat 2
Alien Swarm

11. Modular Combat 2

4 months ago TBD Multiplayer & Co-op First Person Shooter

Modular Combat 2 is an upcoming role-playing shooter based in the Half-Life universe. The game will feature upgraded graphics with custom shaders, AI...

Lylat's Last Stand
Alien Swarm

12. Lylat's Last Stand

1 year ago TBD Single & Multiplayer Third Person Shooter

SFR (WIP title) is a mod for the Source Engine. It's based on the 3d shooter game Starfox. It will be mostly based on the 1993 nintendo power comics...

Alien Swarm Aliens Mod
Alien Swarm

13. Alien Swarm Aliens Mod

4 years ago Released Oct 31, 2010 Single & Multiplayer Tactical Shooter

this "mod" will replace weapon's data and sounds for alien swarm making it feel like Aliens. Furthermore, maps will be made for this mod and the final...

ALIENS
Alien Swarm

14. ALIENS

1 year ago TBD Single & Multiplayer Tactical Shooter

A mod for Alien Swarm that is based on the ALIENS movie but for a set of new marines to go and investigate LV426 and see what happened there! (This is...

Apocalypse-22
Alien Swarm

15. Apocalypse-22

4 months ago TBD Single, Multiplayer & Co-Op First Person Shooter

Apocalypse cuenta la historia de Abigaíl, una mujer de 28 años de edad en un futuro apocalíptico y sin memorias de su pasado. (Historia en desarrollo)

The Survival
Alien Swarm

16. The Survival

2 months ago TBD Single Player First Person Shooter

The Survival is an episodic Source Engine total conversion mod with an original storyline and unique cast of characters. Play your way through a post-apocalyptic...

Omnibus
Alien Swarm

17. Omnibus

4 years ago TBD Single & Multiplayer Arcade

Warhammer 40k mod for Alien Swarm. You play as one of four members in a Space Marine squad and you're sent to a Tyranid infected planet to investigate

Alien Swarm Director Mod
Alien Swarm

18. Alien Swarm Director Mod

1 year ago Released Nov 3, 2011 Single Player Third Person Shooter

Welcome to the Alien Swarm Director Mod! ASDM is a single player Alien Swarm mod focusing on increasing replayability by creating a dynamic experience...

Swarm Keeper
Alien Swarm

19. Swarm Keeper

2 years ago Released Jun 3, 2012 Single & Multiplayer Real Time Strategy

Swarm Keeper is a Dungeon Keeper inspired modification for Alien Swarm. It offers the following features: Build a dungeon for your creatures (aliens...

SourceForts 2
Alien Swarm

20. SourceForts 2

2 years ago TBD Multiplayer First Person Shooter

Redefine the environment around you. SourceForts 2 is a FPS game designed around building your base and battling against the opposing team in order to...

IAF Weapon Drop
Alien Swarm

21. IAF Weapon Drop

2 years ago Released Mar 28, 2012 Multiplayer Third Person Shooter

Almost all weapons were modified more or less noticeable. Some of them are big changes (like semi-auto Railguns and Sniper Rifles or Miniguns with lot...

Alien Haunt
Alien Swarm

22. Alien Haunt

4 years ago Released Oct 31, 2010 Single & Multiplayer Adventure

Alien Haunt. A Map for Alien Swarm. 1 Campaign with 5 maps. Get ready to be swarmed by aliens!

Alien Swarm:Silencer Mod
Alien Swarm

23. Alien Swarm:Silencer Mod

6 months ago Released Nov 11, 2014 Single, Multiplayer & Co-Op Third Person Shooter

Do you think the aliens are deaf?Unfortunately,they have perfect hearing ability.In another word,the huge noice comes from your weapons can attract the...

Optic
Alien Swarm

24. Optic

5 months ago TBD Multiplayer First Person Shooter

Optic is a team-based multiplayer shooter where players can take the role of either a fast-moving runner or a slow-moving hunter.

Uprise
Alien Swarm

25. Uprise

2 years ago TBD Multiplayer First Person Shooter

The Resistance have mobilized agaisnt the Combine, causing the streets of City 17 to be turned into a warzone. Fight for the Resistance as a Rebel or...

Alien Swarm: The Darkness
Alien Swarm

26. Alien Swarm: The Darkness

4 years ago TBD Single & Multiplayer Tactical Shooter

The Darkness is a mod designed to put the players into a much more difficult position than that of the original Alien Swarm, by removing a lot of lighting...

Brawlers
Alien Swarm

27. Brawlers

2 years ago TBD Multiplayer Third Person Shooter

After the dust had settled from the worlds greatest war, stockpiles of defunct weapons and ammunitions around Europe were scheduled for destruction. Private...

B.R.I.S.k.
Alien Swarm

28. B.R.I.S.k.

2 years ago TBD Single Player Arcade

B.R.I.S.k. is a game with unique gameplay developed by a team «Two On The One Box», which has created a modification for the game Portal 2 - Afterword...

Alien Swarm: Rifle Mod
Alien Swarm

29. Alien Swarm: Rifle Mod

11 months ago Released Jan 1, 2014 Single & Co-op Arcade

Rifle Mod is an Alien Swarm server-only mod that forces players to play with assault rifles only, harder aliens, more ammo, smarter bots. However rifle...

Lights
Alien Swarm

30. Lights

2 years ago TBD Single & Multiplayer Cinematic

Once you find the light, nothing can defeat you...

Icon
Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
Contact
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Official Page
Alienswarm.com
Release Date
Released Jul 18, 2010
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20
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Popular Mods
Lambda Wars (Alien Swarm)
Lambda Wars Alien Swarm - Single & Multiplayer Real Time Strategy
Swarm Director 2 (Alien Swarm)
Swarm Director 2 Alien Swarm - Single & Co-op Third Person Shooter
Space Swarm Marines (Alien Swarm)
Space Swarm Marines Alien Swarm - Single, Multiplayer & Co-Op Third Person Shooter
ALIEN SWARM FP (Alien Swarm)
ALIEN SWARM FP Alien Swarm - Co-op First Person Shooter
Occult Scrim (Alien Swarm)
Occult Scrim Alien Swarm - Single & Multiplayer Third Person Shooter
Black Mesa Swarm (Alien Swarm)
Black Mesa Swarm Alien Swarm - Single & Multiplayer First Person Shooter
Alien Swarm: Reactive Drop (Alien Swarm)
Alien Swarm: Reactive Drop Alien Swarm - Single, Multiplayer & Co-Op Arcade
Alien Swarm:SP (Alien Swarm)
Alien Swarm:SP Alien Swarm - Single Player Third Person Shooter
Tron Swarm (Alien Swarm)
Tron Swarm Alien Swarm - Single, Multiplayer & Co-Op Third Person Shooter
Vectronic (Alien Swarm)
Vectronic Alien Swarm - Single Player Puzzle Compilation
Modular Combat 2 (Alien Swarm)
Modular Combat 2 Alien Swarm - Multiplayer & Co-op First Person Shooter
Lylat's Last Stand (Alien Swarm)
Lylat's Last Stand Alien Swarm - Single & Multiplayer Third Person Shooter
Alien Swarm Aliens Mod (Alien Swarm)
Alien Swarm Aliens Mod Alien Swarm - Single & Multiplayer Tactical Shooter
ALIENS (Alien Swarm)
ALIENS Alien Swarm - Single & Multiplayer Tactical Shooter
Apocalypse-22 (Alien Swarm)
Apocalypse-22 Alien Swarm - Single, Multiplayer & Co-Op First Person Shooter